Triumph · 1965
TR4A IRS
Manual · RWD · United Kingdom
AutoIndex value · good UK car
£32,000
Researched from UK sold prices and auction results. How we value cars
Estimated price by condition
Project
£19,200
Restoration candidate
Driver
£32,000
Good usable example
Concours
£48,000
Show standard
Indicative condition bands · not a valuation of a particular car
Price check
Looking at a TR4A IRS for sale? Is it a good price?
Buyer’s notes
About the Triumph TR4A IRS
The TR4A of 1965 gave the TR independent rear suspension, with semi-trailing arms and coil springs. For the US market Triumph also built it with the TR4’s live axle, so IRS cars carry commissioning numbers beginning CTC. About 28,500 TR4As were built to 1967, most of them with IRS.
What moves the price
- Rear suspension: an IRS car, confirmed by its commissioning number, against a live-axle car.
- Chassis condition: rust and repairs around the rear suspension mountings.
- Originality and history.
Before you buy, check
- The chassis all round the rear suspension and differential mountings, the outriggers, the front crossmember and the engine and gearbox mounts.
- Sagging sills or chassis members, which show as uneven panel gaps, and corrosion behind the arch lips.
- The commissioning number for IRS (CTC) against the car, and water leaks and damp carpets.
Facts checked against: Wikipedia · rmsothebys.com · themarket.co.uk · classicsworld.co.uk · insurance.goodwood.com
Vehicle data
Specifications
From 1965
Performance
Production
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Triumph TR4A IRS: value questions answered
- How much is a Triumph TR4A IRS worth?
- A good, usable UK example of the Triumph TR4A IRS is worth around £32,000 on the AutoIndex index. A project car that needs restoration is nearer £19,200, and a concours-quality example around £48,000. Condition moves the price more than anything else.
- What makes one TR4A IRS worth more than another?
- Service history and paperwork — complete, stamped, explained
- Mileage against the norm for the model
- Originality — matching numbers, original paint and trim
- Specification — gearbox, colour, factory options
- UK-supplied versus imported
- Is the TR4A IRS I'm looking at fairly priced?
- Enter its asking price and condition in the price check above. It compares the price with the index for that condition and tells you what to ask the seller about.
- How many TR4A IRS cars were built?
- Around 28,465 were built, by our production records.
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